刘吉祥, 赵钺, 沈彦丞,等.无充填和石膏充填预制裂隙花岗岩力学特性与能量演化差异研究[J].河南理工大学学报（自然科学版）,2026,45(4):150-158.

LIU J X, ZHAO Y, SHEN Y C,et al.Mechanical properties and energy evolution of unfilled and gypsum-filled precracked granite[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(4):150-158.

无充填和石膏充填预制裂隙花岗岩力学特性与能量演化差异研究

刘吉祥1, 赵钺1, 沈彦丞1, 赵尔丞1, 张春阳2, 谭涛2

1.兰州有色冶金设计研究院有限公司，甘肃 兰州  730000;2.武汉理工大学 资源与环境工程学院，湖北 武汉  430070

摘要: 目的为探索无充填物和有充填物两类状态下预制裂隙花岗岩试件的力学特性和能量演化差异，开展无充填和石膏充填预制裂隙花岗岩力学特性与能量演化差异研究。  方法 预制包含中心圆孔的不同裂隙倾角花岗岩试件，考虑石膏充填状态的影响，通过单轴压缩试验探讨试件的力学行为和储能特性。  结果 结果表明：无充填物和石膏充填下花岗岩的峰值强度和弹性模量随预制裂隙倾角增大而线性增大，峰值总输入能和储能极限随预制裂隙倾角增大而指数增加。石膏充填并未改变预制裂隙对花岗岩峰值强度、弹性模量以及能量吸收和存储演化规律的影响，但增强了试件的完整性，且能吸收外界输入的能量，使其破坏所需的能量和储能水平得到提升，且这种增强效果在预制裂隙倾角为0°～60°时较为显著，而60°～90°时减弱。为表征试件破坏过程中的能量演化特征，通过能量抑制原理提出了对应的弹性应变能演化模型，并验证该能量模型的可靠性。  结论研究结果可为裂隙岩体的注浆加固提供理论指导。

关键词:预制裂隙花岗岩;石膏充填;单轴压缩试验;能量演化规律

doi:10.16186/j.cnki.1673-9787.2024040009

基金项目:国家自然科学基金资助项目（52174088）

收稿日期:2024/04/05

修回日期:2024/06/14

出版日期:2026/06/17

Mechanical properties and energy evolution of unfilled and gypsum-filled precracked granite

Liu Jixiang1, Zhao Yue1, Shen Yancheng1, Zhao Ercheng1, Zhang Chunyang2, Tan Tao2

1.Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co.， Ltd.， Lanzhou  730000， Gansu， China;2.School of Resources and Environmental Engineering， Wuhan University of Technology， Wuhan  430070， Hubei， China

Abstract: Objectives To investigate the differences in mechanical properties and energy evolution characteristics of precracked granite specimens under unfilled and gypsum-filled conditions， a comparative study on the mechanical behavior and energy evolution of unfilled and gypsum-filled precracked granite was conducted.  Methods Granite specimens containing a central circular hole and prefabricated cracks with different inclination angles were prepared. Considering the influence of gypsum filling， uniaxial compression tests were carried out to investigate the mechanical behavior and energy storage characteristics of the specimens.  Results The results show that the peak strength and elastic modulus of both unfilled and gypsum-filled granite increase linearly with increasing crack inclination angle， whereas the peak total input energy and energy storage limit increase exponentially. Gypsum filling does not alter the influence of prefabricated cracks on the peak strength， elastic modulus， or energy evolution characteristics of granite. However， gypsum filling improves specimen integrity and absorbs part of the external input energy， thereby increasing both the energy required for failure and the energy storage capacity of the specimens. This enhancement effect is more pronounced when the crack inclination angle ranges from 0°to 60°， but becomes weaker when the angle ranges from 60° to 90°. In addition， to characterize the energy evolution during specimen failure， an elastic strain energy evolution model based on the energy suppression principle was proposed， and its reliability was verified.  Conclusions The results can provide theoretical guidance for grouting reinforcement of fractured rock masses.

Key words:precracked granite;gypsum filling;uniaxial compression test;energy evolution